Power-play % is power-play goals divided by power-play chances. Higher means the team scores on more power plays. Below are all 32 NHL teams ranked by Regular Season Power Play % in the 1977-78 regular season.
| # | Team | PP% | |
|---|---|---|---|
| 1 | 31.9 | ||
| 2 | 31.4 | ||
| 3 | 28.8 | ||
| 4 | 23.6 | ||
| 5 | 22.6 | ||
| 6 | 22.5 | ||
| 7 | 22.5 | ||
| 8 | 22.2 | ||
| 9 | 21.3 | ||
| 10 | 21.1 | ||
| 11 | 21.0 | ||
| 12 | 20.8 | ||
| 13 | 20.2 | ||
| 14 | 19.5 | ||
| 15 | 16.7 | ||
| 16 | 14.9 | ||
| 17 | 12.5 | ||
| 18 | 0.0 |